///////////////////////////////////////////////////////////////
//  point.cpp  -  represents a two dimensional point         //
//  ver 1.1                                                  //
//                                                           //
//  Language:     Visual C++, ver 6.0                        //
//  Platform:     Dell OptiPlex, Win NT 4.0                  //
//  Application:  HW#3, ECS500, Su 99                        //
//  Author:       Jim Fawcett, Instructor, CST 2-187         //
//                Syracuse Univ, (315) 443-3948              //
//                fawcett@ecs.syr.edu                        //
///////////////////////////////////////////////////////////////

#include "point.h"

//----< coordinate constructor >-------------------------------
//
//  note the use of an initialization sequence
//  you should always do this with constructors

point::point(double x, double y) : _x(x), _y(y) { }

//----< additive assignment >----------------------------------

point& point::operator+=(const point &p) {

  _x += p._x;
  _y += p._y;

  return *this;
}

//----< addition >---------------------------------------------

point point::operator+(const point &p) {

  point temp = *this;
  temp += p;
  return temp;
}

#ifdef TEST_POINT

//----< test stub >--------------------------------------------

void main() {

  point p1, p2(1.5,-1.5), p3(2.0, 1.5);  // coordinate ctor

  cout << p1 << ", " << p2 << ", " << p3 << endl;

  point p4 = p1+=p2;    // invoke additive assignment
                        // invoke compiler defined assignment
  
  cout << p1 << ", " << p2 << ", " << p3 << endl;

  p1 = p2 + p3;         // invoke addition operator
                        // invoke compiler defined assignment
  cout << p1 << ", " << p2 << ", " << p3 << endl;

}
#endif